Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.
Stephen HawkingI think the brain is essentially a computer and consciousness is like a computer program. It will cease to run when the computer is turned off. Theoretically, it could be re-created on a neural network, but that would be very difficult, as it would require all one's memories.
Stephen HawkingIt is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!
Stephen Hawking